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Shonda Rhimes and her Scandal star Kerry Washington are the focus of Sunday's all-new episode of Oprah's Next Chapter, and in addition to talking about the importance of their addictive Thursday night series, Rhimes looks back on one of her more frustrating professional moments.

In 2008, Katherine Heigl notoriously pulled her name from Emmy contention, saying that she didn't feel the material she was given that year warranted consideration. "On some level, it stung," Rhimes tells Oprah Winfrey. "But on some level I was not surprised. When people show you who they are, believe them. I carry that with me a lot. It has served me well."

Winfrey then goes on to ask Rhimes what accomplishment she's most proud of. "I'm most proud of the fact that I have figured out how to exist as both a creative person and artist and a businesswoman and a manager," she says. "Because those two things do not go together. For a long time I really had a hard time with the idea that I was supposed to be this person who lived inside her head and created things, but also managed a bunch of people and had to lead a group of people."

Rhimes adds, "But those two things came together, and I'm really proud of how that works now."

Check out a sneak peek clip and tune in to Oprah's Next Chapter every Sunday at 9 p.m. on OWN.